Alas,
I don’t have a spare server to test out deploying ONTAP deploy on a physical
KVM host, but I can try with a nested host in VMware Workstation. I’m a KVM
noob, and no Linux guru either, so if I can get it working, anyone can.
1) Hardware Setup
CentOS 7.2 was downloaded from the
internet.
The ISO used here is CentOS-7-x86_64-Everything-1511.iso
(we
use the Everything ISO, but we just do a minimal setup)
CentOS
KVM Host Hardware:
Memory = 8 GB
Processors = 4
Hard Disk (SCSI) = 80 GB
CD/DVD (IDE) = CentOS-7-x86_64-Everything-1511.iso
1 x Network Adapter
Note: The hardware above is sufficient to support host
and ONTAP Deploy requirements of:
- Virtual CPUs: 2
- Virtual memory: 4 GB
- Storage: 40 GB (The ONTAPdeploy VM has a 40GB disk)
Image:
Virtual Machine Settings
2) Host Setup: Installing the OS
2.1) Boot the VM with the ISO attached
2.2)
From the initial CentOS 7 splash screen, choose “Install CentOS 7” and press ENTER
Image:
CentOS 7 install splash screen (booting from iso)
2.3)
Press ENTER
to begin the installation process
2.4) In the CentOS 7 Installation GUI choose language and keyboard,
and click Continue
2.5)
Make amendments as required in the CentOS 7
Installation Summary.
Below are my selections/acceptances of
defaults:
SECURITY POLICY: No profile selected
SOFTWARE:
- INSTALLATION SOURCE: Local media
- SOFTWARE SELECTION: Minimal Install
SYSTEM
- INSTALLATION DESTINATION: Automatic
partitioning selected
- KDUMP: Kdump is enabled
- NETWORK & HOST NAME:
Host name: chost-00.lab.priv
Address: 192.168.255.10
Netmask: 255.255.255.0
Gateway: 192.168.255.2
DNS Servers: 8.8.8.8,8.8.4.4
Search domains: lab.priv
The click Begin Installation
2.6) CONFIGURATION: USER SETTINGS
Set the root password
User creation: admin
2.7) Reboot
2.8) Login to the CLI>
#
halt
- Add
a second network interface that we’ll use for the VM bridge
- Disconnect the ISO
- Take a snapshot of the VM
- Power
on
3) Host Setup: Install the right packages
3.1) Install KVM and its associated packages (note that some of the
below will say “Nothing to do” but I’ve included them for completeness):
#
yum install qemu-kvm
#
yum install qemu-img
#
yum install virt-manager
#
yum install libvirt
#
yum install libvirt-python
#
yum install libvirt-client
#
yum install virt-install
#
yum install virt-viewer
#
yum install bridge-utils
3.2)
Start and enable the libvirtd service
#
systemctl start libvirtd
#
systemctl enable libvirtd
3.3)
Load KVM, check it is running (the lsmod should
give at least one line of output), and make it run at startup:
#
modprobe kvm
#
lsmod | grep kvm
#
echo "modprobe kvm" >> /etc/rc.modules
#
chmod +x /etc/rc.modules
Note:
I don’t install the graphical virt-manager, since I want to keep this as
minimal a CentOS install as possible, and not have to install GNOME Desktop.
3.4)
Configure Bridge Interface
Note:
Insert to enter in VI. Then to exit
- ESCAPE : wq
#
cd /etc/sysconfig/network-scripts
#
ls
#
ip addr show
Create an ifcfg file for your second
network interface as below (change ens34 with the name of your interface):
#
vi ifcfg-ens34
TYPE="Ethernet"
BOOTPROTO="static"
DEVICE="ens34"
ONBOOT="yes"
BRIDGE="br0"
Create an ifcfg file for the bridge as below:
#
vi ifcfg-br0
TYPE="Bridge"
BOOTPROTO="static"
DEVICE="br0"
ONBOOT="yes"
Confirm the files are correct:
#
cat ifcfg-ens34
#
cat ifcfg-br0
Restart the network service to enable
the bridge interface, and check the bridge interface is UP:
#
systemctl restart network
#
ip addr show br0
3.5) Install the LS HW package, and LS SCSI package:
#
yum --setopt=obsoletes=0 install lshw
#
yum --setopt=obsoletes=0 install lsscsi
4) Install ONTAP Deploy VM
The automatic partitioning is not ideal,
but we do have enough space.
#
df -h
DF -h should show around 49G usable.
First, we need to copy the ONTAPdeploy2.6.1.raw.tgz from my Windows laptop to
the CentOS server. I use PSCP.exe as below:
pscp
"C:\ONTAPdeploy2.6.1.raw.tgz" root@192.168.255.10:/
Then untar it:
#
cd /
#
tar -xvzf ONTAPdeploy2.6.1.raw.tgz
If you want/it is necessary, you can remove
gunzip file:
#
df -h
#
rm ONTAPdeploy2.6.1.raw.tgz
Install ONTAP Deploy:
#
ls -altr /
#
virt-install --name=deploy-kvm --vcpus=2 --ram=4096 --os-type=linux
--controller=scsi,model=virtio-scsi --disk
path=/ONTAPdeploy.raw,device=disk,bus=scsi,format=raw --network bridge=br0
--console=pty --import --wait 0
Example:
[root@chost-00
/]# virt-install --name=deploy-kvm --vcpus=2 --ram=4096 --os-type=linux
--controller=scsi,model=virtio-scsi --disk
path=/ONTAPdeploy.raw,device=disk,bus=scsi,format=raw --network bridge=br0
--console=pty --import --wait 0
WARNING KVM acceleration not available, using 'qemu'
WARNING No operating system detected, VM performance
may suffer. Specify an OS with --os-variant for optimal results.
Starting
install...
Domain
creation completed.
See deploy-kvm is running:
#
virsh list
Example:
[root@chost-00
/]# virsh list
Id
Name State
------------------------------
1
deploy-kvm running
Next steps would be to connect to the
console and complete the configuration of the Deploy VM. But since this was
running on CentOS on VMware Workstation on Windows on a laptop (not a super
beefy one either), the performance is not great, so we’ll end this post here.
#
virsh console deploy-kvm
Note:
This is my first experience running a VM in KVM. Hopefully this post is not too
shabby and shows that it’s not that difficult.
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